/* ───────────────────────────────────────
   FILE: css/features.css
   PURPOSE: Animated module feature cards (Part 4). Section shell, card
            entry animation, and the five telemetry/chief/maintenance/fuel/
            crash data visualisations. Driven by js/features/features.js.
   PART OF: Sentinel website stylesheet (split from css/styles.css)
   LAST UPDATED: 2026-06-05
   ─────────────────────────────────────── */

.modules-section {
  padding: 80px 0;
}
.modules-inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px;
}
.modules-intro {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text-dim);
  margin: 16px 0 48px;
  line-height: 1.6;
}
.modules-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.feat-card {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s var(--ease-out),
              transform 0.4s var(--ease-out);
  background: rgba(20, 19, 17, 0.55);
  backdrop-filter: blur(16px) saturate(135%);
  -webkit-backdrop-filter: blur(16px) saturate(135%);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 24px 20px;
  position: relative;
}
@supports not ((backdrop-filter: blur(1px)) or
               (-webkit-backdrop-filter: blur(1px))) {
  .feat-card { background: rgba(20, 19, 17, 0.92); }
}
.feat-card.visible {
  opacity: 1;
  transform: none;
}
.feat-card.active {
  border-color: rgba(212, 148, 12, 0.3);
}
.feat-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.feat-index {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}
.feat-label-text {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.25em;
}
.feat-headline {
  font-family: var(--font-body);
  font-size: 22px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 22px;
  line-height: 1.3;
}
.feat-speed-num {
  font-family: var(--font-display);
  font-size: 64px;
  color: var(--text);
  line-height: 1;
  letter-spacing: -2px;
}
.feat-speed-unit {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.2em;
  margin-left: 6px;
}
.feat-bar-row {
  display: grid;
  grid-template-columns: 78px 1fr 52px;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
}
.feat-bar-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted);
  letter-spacing: 0.15em;
}
.feat-bar-track {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.feat-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  width: 0%;
  transition: width 1.2s var(--ease-out);
}
.feat-bar-fill.brake { background: var(--red); }
.feat-bar-val {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  text-align: right;
}
.feat-score {
  margin-top: 18px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.feat-score-num {
  font-family: var(--font-display);
  font-size: 40px;
  color: var(--green);
  line-height: 1;
}
.feat-score-denom {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}
.feat-chief {
  background: rgba(255, 255, 255, 0.02);
  border-left: 2px solid var(--accent);
  padding: 14px 16px;
  border-radius: 0 6px 6px 0;
}
.feat-chief-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--accent);
  letter-spacing: 0.25em;
  margin-bottom: 10px;
}
.feat-chief-body {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.65;
  min-height: 84px;
}
.feat-cursor {
  display: inline-block;
  width: 2px;
  height: 14px;
  background: var(--accent);
  vertical-align: middle;
  margin-left: 1px;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }
.feat-service-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-2);
  border-radius: 6px;
  margin-bottom: 6px;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.feat-service-row.visible { opacity: 1; }
.feat-service-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.feat-service-name {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text);
  flex: 1;
}
.feat-service-status {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
}
.feat-obd-row, .feat-tpms-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 8px;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.feat-obd-row.visible, .feat-tpms-row.visible {
  opacity: 1;
}
.feat-obd-cell {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-2);
  border-radius: 6px;
  padding: 10px;
}
.feat-obd-val {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  display: block;
}
.feat-obd-lbl {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted);
  display: block;
  margin-top: 3px;
}
.feat-fuel-label-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted);
  margin-bottom: 6px;
}
.feat-fuel-track {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.feat-fuel-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  width: 0%;
  transition: width 1.5s var(--ease-out);
}
.feat-fuel-stats {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
}
.feat-fuel-stat-val {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--text);
  display: block;
}
.feat-fuel-stat-lbl {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted);
  display: block;
}
.feat-pump-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-2);
  border-radius: 6px;
  margin-top: 12px;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.feat-pump-row.visible { opacity: 1; }
.feat-pump-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.feat-pump-text {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text);
  letter-spacing: 0.05em;
}
.feat-crash-ring-wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 14px;
}
.feat-crash-ring {
  width: 72px;
  height: 72px;
  flex-shrink: 0;
}
.feat-crash-countdown {
  font-family: var(--font-display);
  font-size: 48px;
  color: var(--red);
  line-height: 1;
  transition: color 0.3s ease;
}
.feat-crash-countdown.safe { color: var(--green); }
.feat-crash-sms {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--green);
  letter-spacing: 0.1em;
  opacity: 0;
  transition: opacity 0.5s ease;
  margin-top: 10px;
}
.feat-crash-sms.visible { opacity: 1; }
.feat-crash-note {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted);
  margin-top: 10px;
  line-height: 1.5;
}

/* ─── HELPER CLASSES ADDED FOR features.js MARKUP ─────────
   The spec data markup needs status colours and crash-ring strokes the
   base block above does not define. Done with classes (no inline styles,
   per CSP / rule 10.4):
     .is-red / .is-green / .is-amber  — service dots + status text
     .feat-obd-val.is-green           — OBD readouts shown as nominal
     .ring-bg / .ring-fg / .safe      — crash countdown ring strokes
   ─────────────────────────────────────────────────────── */
.feat-service-dot.is-red   { background: var(--red); }
.feat-service-dot.is-green { background: var(--green); }
.feat-service-dot.is-amber { background: var(--accent); }
.feat-service-status.is-red   { color: var(--red); }
.feat-service-status.is-green { color: var(--green); }
.feat-service-status.is-amber { color: var(--accent); }
.feat-obd-val.is-green { color: var(--green); }
.feat-crash-ring .ring-bg { stroke: var(--border); }
.feat-crash-ring .ring-fg {
  stroke: var(--red);
  transition: stroke-dashoffset 3s linear, stroke 0.3s ease;
}
.feat-crash-ring.safe .ring-fg { stroke: var(--green); }